Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 12" -
Suspension Rigid -
Brakes Coaster
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Specialized A1 Premium Aluminum, Ground Control geometry, 12"" frame w/ low standover TT, integrated kickstand mount, horizontal dropouts
Suspension Fork
A1 Premium Aluminum blade, 1"" threaded Hi-Ten steerer
Drivetrain
Crank
Heat treated Hi-Ten, 1pc.
Bottom Bracket
Heat treated Hi-Ten cups, loose ball for 1pc.
Chain
KMC Z-410, 1/2"" x 1/8""
Pedals
Composite platform, 1/2"" w/ ball bearing
Wheels
Front Hub
Steel, nutted axle, 16h
Rear Hub
Steel, coaster brake, nutted axle, 16h
Rims
Alloy pinned, 16h
Spokes
14g UCP, w/ brass nipple
Tires
Specialized Rhythm Lite Sport, 30 TPI, wire bead, 12x2.0""
Brakes
Brakes
Coaster
Cockpit
Stem
Alloy quill
Handlebar
Alloy 2pc.
Grips
Specialized Kraton Kid's w/ flange
Headset
1"" threaded, loose ball
Seat
Saddle
Specialized Kids, w/ integrated teacher's handle and 22.2mm seat post
Seatpost
Steel, 22.2mm, integrated w/ saddle
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 12" | 16" | 20" |
|---|---|---|---|
| Bottom Bracket Height | 165 mm | 198 mm | 227 mm |
| Rake | 24 mm | 24 mm | 23.5 mm |
| Top Tube Length | 305 mm | 385 mm | 439 mm |
| Seat Tube Angle | 76 ° | 74 ° | 76 ° |
| Seat Tube Length | 179 mm | 210 mm | 241 mm |
| Head Tube Angle | 70 ° | 70 ° | 70 ° |
| Head Tube Length | 70 mm | 80 mm | 80 mm |
| Chainstay Length | 271 mm | 310 mm | 389 mm |
| Standover Height | 338 mm | 412 mm | 482 mm |
| Wheels | 12" | 12" | 12" |
About this model
Hotrock 12 Coaster Boys belongs to the Specialized Hotrock model. Specialized released 35 bikes variations of this model so far. Check out the entire range from 2012 of this model, by clicking this link.
Safety
When cycling always take safety very seriously. Wear a helmet, obey the traffic rules and wear hi-vis clothes. In short, take care of yourself so others can take care of you.
Average price for Youth bikes
If you want to purchase a solid Youth bike, it is important to know that the average cost is 278$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Youth bike. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
Overview of components
Fork material
The fork is made out of aluminum, so there won’t be much extra weight added to the bike. However, they are not so stiff as carbon forks are.
Wheels size
The Hotrock 12 Coaster Boys 2012 bike is equipped with 12″ aluminum wheels when leaving the factory. The 12″ wheels are a good fit for folding bikes, BMX, or children bikes. In conclusion, they are great for flat ground or very easy trails.
Brakes
We ride faster and faster, so a good braking system is essential on a bike nowadays. The Hotrock 12 Coaster Boys comes with Coaster brakes. These brakes are pretty efficient, and they’re not so pricey. However, they have flaws, especially if the chain falls off.